Cement is not a great material for building a house. It is weak in compression (normally made up for by using a lot of it), it has terrible insulation, and it is hard to modify when you want to make a change. 3d printing of buildings is a niche and I predict it always will be.
3D printed things in general tend to have poor (weaker) material properties.
I predict that that won't matter eventually though, because over time, the cost of human labor goes up and the cost of materials goes down (relatively). That means anything that reduces the labor cost to build a house will always eventually happen, even if more materials are needed (unless another technique reduces the labor further first).
